Routed for and installed a battery box in the back of my Fender Jazz Special Bass.
The guy I got it from many years ago replaced the stock bridge with a BaddAss and the stock pickups with EMGs, but just shoved the 9V in the control cavity where it really doesn't fit and it's a PITA to get a new one in.
I've also ordered a TRS jack so that I can wire it so the battery gets disconnected when the cable isn't plugged in.
I really like this bass: P-bass body, J-bass neck, P/J pickups.
Edit:
Also, apparently this bass was popularized by Duff McKagan... I'm not really a Guns fan but I get why he liked them.
Don't know the exact year - 84-87, MIJ (Fujigen).